Patent US5736221A successfully refreshed from Google Patents.
US5736221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welded plastic panels and method of making same
Assignee: Pelican Products Inc
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Filing: 1995-07-21
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Granted: 1998-04-07
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Expires: 2015-07-21
Abstract
Abstract An injection molded panel composed of two half-panels each comprising a skin having matching integral webs or ribs disposed perpendicular to said skin wherein said half-panels are bonded together along said webs or ribs.
Inventors
- 👤 James S. Hardigg
- 👤 Robert L. Wells
- 👤 Mark C. Gaydos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:32
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/0053; B29C45/006; B29C65/00; B29C65/02; B29C65/18; B29C66/00; B29C66/50; B29C66/51; B29C66/54; B29D; B29D24/00; B29D24/002; B29D24/005; E; E04; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/20; B29C2045/0063; B29C65/06; B29C66/70; B29C66/71; B29L; B29L2007/00; B29L2007/002; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/24174
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
68 words
A panel having two distinct panel portions said portions each comprising a skin and integrally molded supporting ribs extending generally perpendicularly to said skin from a first of two surfaces of said skin, said ribs defining a bonding surface spaced from said first surface of said skin by the extent of said ribs, said panel portions being bonded at the bonding surface of the ribs of each portion.
Claim 2
Dependent Claim
68 words
A panel having two distinct panel portions said portions each comprising a skin and integrally molded supporting ribs extending generally perpendicularly to said skin from a first of two surfaces of said skin, said ribs defining a bonding surface spaced from said first surface of said skin by the extent of said ribs, said panel portions being bonded at the bonding surface of the ribs of each portion.
Claim 3
Dependent Claim
22 words
A panel as claimed in claim 1 wherein each rib is aligned with a rib on the other of said panel portion.
Claim 4
Dependent Claim
15 words
A panel as claimed in claim 1 wherein each rib panel portion further includes gussets.
Claim 5
Dependent Claim
87 words
A panel as claimed in claim 3 wherein said gussets are about half as tall as each rib, said rib being measured, from said first surface of said skin to said bonding surface of said rib and one third as long as each rib when measured in the same plane as the stated measurement from the first surface of the skin to the bonding surface of the rib and perpendicularly to said measurement from the first surface of the skin to the bonding surface of the rib.
Claim 6
Dependent Claim
24 words
A panel as claimed in claim 3 wherein said gussets include a hypotenuse extending from said rib to said first surface of said skin.
Claim 7
Dependent Claim
19 words
A panel as claimed in claim 3 wherein said gussets are located in a central location along each rib.
Claim 8
Dependent Claim
22 words
A panel as claimed in claim 1 wherein each said rib forms a geometric pattern on said first surface of said skin.
Claim 9
Dependent Claim
16 words
A panel as claimed in claim 7 wherein said geometric pattern is a repeating parallelogram shape.
Claim 10
Dependent Claim
13 words
A panel as claimed in claim 8 wherein said parallelogram shape is rectangular.
Claim 11
Dependent Claim
31 words
A panel as claimed in claim 1 wherein said ribs each include at least one boss molded therein for receiving a projection from or through the other of said panel portions.
Claim 12
Dependent Claim
18 words
A panel as claimed in claim 1 wherein said panel portions are bonded together by hot plate bonding.
Claim 13
Dependent Claim
17 words
A panel as claimed in claim 1 wherein said panel portions are bonded together by adhesive bonding.
Claim 14
Dependent Claim
17 words
A panel as claimed in claim 1 wherein said panel portions are bonded together by friction welding.
Claim 15
Dependent Claim
21 words
A panel as claimed in claim 4 wherein each gusset extends toward a center area of each rib defined geometric pattern.
Claim 16
Dependent Claim
17 words
The panel of claim 1 wherein each panel portion is comprised of a hot plate weldable material.
Claim 17
Dependent Claim
14 words
The panel of claim 1 wherein each said panel portion is composed of polyethylene.
Claim 18
Dependent Claim
14 words
The panel of claim 1 wherein each said panel portion is composed of polypropylene.
Claim 19
Dependent Claim
14 words
The panel of claim 1 wherein each said panel portion is composed of acrylonitrile-butadiene-styrene.
Claim 20
Dependent Claim
14 words
The panel of claim 1 wherein each said panel portion is composed of polycarbonate.
Claim 21
Dependent Claim
14 words
The panel of claim 1 wherein each said panel portion is composed of acrylic.
Claim 22
Dependent Claim
14 words
The panel of claim 1 wherein each said panel portion is composed of metal.
References Cited (Backward Citations)
US2715598A
Cited
US3096958A
Cited
US3509005A
Cited
US3664906A
Cited
US3748214A
Cited
US4740408A
Cited
US4957788A
Cited
US5089206A
Cited
US5273806A
Cited
EP0571876A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-04-06 | 2001-10-06 | 2002-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-04-06 | 2005-10-06 | 2006-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-04-06 | 2009-10-06 | 2010-04-07 | $7700.00 | Window Closed / Lapsed |